Colorado's 25-Mile Isolation Peaks

Colorado's 25-Mile Isolation Peaks

Colorado, United States, North America
Page Type Page Type: List
Sign the Climber's Log

What is the 25-Mile Isolation List?

Just as 2000' is an important prominence threshold and 14000' an important elevation threshold, 25 miles is the magic number that gives a peak a spot on an isolation list. This page contains those peaks with 25 miles of isolation which are in the U.S. State of Colorado. But what is isolation anyway? Isolation is how far a peak is from the nearest higher one. Understandably, isolated peaks are often also high in elevation, are very topographically prominent, or, in some cases, both. Colorado is no exception as the state's highest and most prominent peak is also its most isolated, and, indeed, all of the peaks on this list, except two, are also on the Colorado 2KPs page, and every single one is over 9000' in elevation, and most are over 12000'.

Contained below is a table containing the peak's name--which has a hyperlink to the peak page--as well as its isolation, elevation, and topographical prominence. So, without further ado, the Colorado
isolation list.

The Colorado 25-Mile Isolation List

Data taken from the Peakbagger page and the Colorado 2KPs page. Peaks without links have no SP page. See below for the Eolus/Windom debate.

CO Rank Peak Name Isol. (Mi.) Elev. (Ft.) Prom. (Ft.)
1 Mount Elbert 670.6 14,440 9,093
2 Blanca Peak 103.4 14,349 5,325
3 Uncompahgre Peak 85 14,309 4,249
4 Pikes Peak 60.6 14,115 5,530
5 Longs Peak 43.6 14,255 2,955
6 Flat Top Mountain 40.8 12,354 4,054
7 Summit Peak 39.6 13,300 2,760
8 Peak 9,040 39.4 9,040 820
9 Mount Zirkel 37.7 12,180 3,470
10 Culebra Peak 35.4 14,047 4,827
11 Ute Peak 34.3 9,979 4,039
12 Mount Wilson 33 14,246 4,026
13 Fishers Peak 31 9,627 1,827
14 Diamond Peak 29.7 9,660 2,845
15 Crestone Peak 27.4 14,294 4,554
16 San Luis Peak 27 14,014 3,114
17 Windom Peak 26.3 14,092 2,167
18 Greenhorn Mountain 25.2 12,347 3,777
19 Grays Peak 25 14,270

Mount Eolus vs. Windom Peak

Although the listed elevations sometimes indicate the opposite, I have been informed that Windom Peak is indeed higher than Mount Eolus. Despite what other pages on this site and elsewhere might say, Windom Peak is truly the higher of the two, meaning it, not Eolus, should be on the Colorado 2KPs page and should be ranked higher than it is on the various 14er pages. Thanks to SPer Scott for the update.

Additions & Corrections

If there are any errors--which there may well be, as I have never lived in Colorado--feel free to contact me.


Add any images of these peaks here.



Children refers to the set of objects that logically fall under a given object. For example, the Aconcagua mountain page is a child of the 'Aconcagua Group' and the 'Seven Summits.' The Aconcagua mountain itself has many routes, photos, and trip reports as children.